Agnes Cairns
| Name | Agnes Cairns |
| Type | Sailing vessel |
| GRT | 146 tons |
| Country |  British |
| Built | 1873 |
| Builder | J. Whitehead, Limekilne |
| Operator | Joseph Penaliggon, Newquay |
| History |
U-boat attacks on Sailing vessel Agnes Cairns
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 26 Apr 1917 | UC 65 (Otto Steinbrinck) | Sunk | Stopped and scuttled 8 miles NE of Alderney Island | Portsmouth - Guernsey | coal | 0 |
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